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單項(xiàng)選擇題

Which extinguishing agent is most effective on a mattress fire?（）

A.CO₂
B.Foam
C.Dry Chemical
D.Water

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單項(xiàng)選擇題

Which extinguishing agent is effective in combating an isoprene fire?（）

A.Dry chemicals
B.CO₂
C.Foam
D.All the above

單項(xiàng)選擇題

Which extinguishing agent is best for use on a magnesium fire?（）

A.Water
B.Sand
C.CO₂
D.Dry chemical